通过conlse线和crt软件连接并登陆设备，然后把设备断电重启。控制台上会打印如下信息，当出现“press Ctrl+B”的时候快速按住“Ctrl+B” 进入botroom菜单
System is starting...
Press Ctrl+D to access BASIC-BOOTWARE MENU
Booting Normal Extend BootWare
The Extend BootWare is self-decompressing.......................Done!
BootWare Validating...
Press Ctrl+B to enter extended boot menu...
BotWare password: Not required. Please press Enter to continue.
Password recovery capability is enabled.
Note: The current operating device is flash
Enter < Storage Device Operation > to select device.
按住“Ctrl+B”进入如下菜单。选择“<6> Skip Current System Configuration”跳过当前配置启动,不同设备可能不是数字6，
===========================<EXTEND-BOOTWARE MENU>===========================
|<1> Boot System |
|<2> Enter Serial SubMenu |
|<3> Enter Ethernet SubMenu |
|<4> File Control |
|<5> Restore to Factory Default Configuration |
|<6> Skip Current System Configuration |
|<7> BootWare Operation Menu |
|<8> Clear Super Password |
|<9> Storage Device Operation |
|<0> Reboot |
============================================================================
Ctrl+Z: Access EXTEND-ASSISTANT MENU
Ctrl+F: Format File System
Enter your choice(0-9): 6
Flag Set Success.
然后输入0重启设备
===========================<EXTEND-BOOTWARE MENU>===========================
|<1> Boot System |
|<2> Enter Serial SubMenu |
|<3> Enter Ethernet SubMenu |
|<4> File Control |
|<5> Restore to Factory Default Configuration |
|<6> Skip Current System Configuration |
|<7> BootWare Operation Menu |
|<8> Clear Super Password |
|<9> Storage Device Operation |
|<0> Reboot |
============================================================================
Ctrl+Z: Access EXTEND-ASSISTANT MENU
Ctrl+F: Format File System
Enter your choice(0-9): 0
System is starting...
Press ENTER to get started.
如果不需要之前的配置信息的话
操作步骤：跳过启动文件后直接保存当前配置，再重启。
<H3C>save
The current configuration will be written to the device. Are you sure? [Y/N]:y
Please input the file name(*.cfg)[flash:/startup.cfg]
(To leave the existing filename unchanged, press the enter key):（输入回车）
flash:/startup.cfg exists, overwrite? [Y/N]:y
Validating file. Please wait...
Configuration is saved to device successfully.
<H3C>reboot
Start to check configuration with next startup configuration file, please wait.........DONE!
Current configuration may be lost after the reboot, save current configuration? [Y/N]:y
This command will reboot the device. Continue? [Y/N]:y
标签：...,清空,Ctrl,配置,System,出厂,Enter,Operation,Configuration From： https://www.cnblogs.com/meili333/p/17089600.html